Because your thevenin equivalents aren't correct.When I connect these circuits together, I know I have my thevenin equivalents correct, however, the current is some funky number of 71.43mA
Why is this?
Aside from still being sloppy with your units -- I will soon stop trying to help you if you don't start tracking your units -- you are making the classic mistake of grabbing the nearest V and the nearest R and thinking that if you throw them at Ohm's Law that you get some kind of current that means something. When the circuits are hooked up, is the 100V appearing ACROSS your 3000 ohm resistance? No! Also, since the three resistances and the two sources are all in series, don't they all have to have the SAME current?Current out of the left hand side = I=V/R --> 100\3000 = 33mA
Current out of the right hand side = I = V/R -- > 400\3000 = 133.33mA